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For 2 years, Gulf Exploration and Production Co. has successfully used a powerful computer system for interactive graphic interpretation of large and diverse volumes of exploration data. This proprietary system, developed by Gulf Research and Development Co., is called ISIS (Interactive Seismic Interpretation System). Some of the capabilities of ISIS are demonstrated using videotape recordings of 3 actual interpretation sessions. The first session comprises interactive log analysis--editing formation evaluation, and tying between wells. The second session involves regional mapping from a large data base of seismic lines and well logs. Numerous access and display features allow projects exceeding 20,000 line-mi (32,000 line-km) to be instantly available at the interactive tation, replacing large volumes of paper records. Horizons can be carried around loops and tied, then posted and contoured automatically. The third session demonstrates detailed reservoir characterization at a mature field. Over 225 digitized well logs are gridded and then analyzed using interactive graphic software originally developed for 3D seismic surveys.
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